Castaway Cove (港町ビッキーニ Port City Bikini) which is also referred to as "The Seaside Paradise of the South". It has an unusual regulation; Everyone who goes there, even if it's only a short visit, must be required to become a "citizen" of Castaway Cove, every citizen must wear swimsuit attire while in the town.
The Governor of Castaway Cove faced ridicule when he first proposed the concept but it became law as it was a very clever solution to prevent crime from pirates and other criminals because, in a bathing suit, it's not easy to hide a weapon! Henceforth, a bathing suit became a sign of respect in Castaway Cove that must be worn at all times, and visitors who go there without one are usually supplied one by the locals but more often than not the Governor himself is the first to gift visitors a bathing suit.
As soon as you walk in, a peddler will offer you a cauldron/cooking pot. He asks you to find something on page 61 of Magic Master and input a "password". The password is "いでよなべまじん< come, cooking-pot devil/genie!". Then a mini-boss battle against the cooking pot genie (なべまじん) begins. He is disorganized and takes a while to find his sword and shield. He's giant, with red skin, a turban, and the lower half of his body is stuck inside the cauldron. After beating him, Oliver receives the (ごうせいなべ hardy cooking pot), and both the ingredients and recipe for (げんきシロップのレシピ healthy syrup recipe).
(ゼルガス Zelgas) - A man with an eyepatch and tuft of white hair on his otherwise black-haired head. He's the captain of the ship Oliver gets to use.